386f5371 |
1 | #include "mapinc.h"\r |
2 | \r |
3 | static uint8 mode;\r |
4 | static uint8 DRegs[4];\r |
5 | \r |
6 | static SFORMAT StateRegs[]=\r |
7 | {\r |
8 | {DRegs, 4, "DREG"},\r |
9 | {0}\r |
10 | };\r |
11 | \r |
12 | static void Sync(void)\r |
13 | {\r |
14 | int base, bank;\r |
15 | base = ((DRegs[0]^DRegs[1])&0x10)<<1;\r |
16 | bank = (DRegs[2]^DRegs[3])&0x1f;\r |
17 | \r |
18 | if(DRegs[1]&0x08)\r |
19 | {\r |
20 | bank &= 0xfe;\r |
21 | if(mode==0)\r |
22 | {\r |
23 | setprg16(0x8000,base+bank+1);\r |
24 | setprg16(0xC000,base+bank+0);\r |
25 | }\r |
26 | else\r |
27 | {\r |
28 | setprg16(0x8000,base+bank+0);\r |
29 | setprg16(0xC000,base+bank+1);\r |
30 | }\r |
31 | }\r |
32 | else\r |
33 | {\r |
34 | if(DRegs[1]&0x04)\r |
35 | {\r |
36 | setprg16(0x8000,0x1f);\r |
37 | setprg16(0xC000,base+bank);\r |
38 | }\r |
39 | else\r |
40 | {\r |
41 | setprg16(0x8000,base+bank);\r |
42 | if(mode==0)\r |
43 | setprg16(0xC000,0x20);\r |
44 | else\r |
45 | setprg16(0xC000,0x07);\r |
46 | }\r |
47 | }\r |
48 | }\r |
49 | \r |
50 | static DECLFW(Mapper167_write)\r |
51 | {\r |
52 | DRegs[(A>>13)&0x03]=V;\r |
53 | Sync();\r |
54 | }\r |
55 | \r |
56 | static void StateRestore(int version)\r |
57 | {\r |
58 | Sync();\r |
59 | }\r |
60 | \r |
61 | void Mapper166_init(void)\r |
62 | {\r |
63 | mode=1;\r |
64 | DRegs[0]=DRegs[1]=DRegs[2]=DRegs[3]=0;\r |
65 | Sync();\r |
66 | SetWriteHandler(0x8000,0xFFFF,Mapper167_write);\r |
67 | GameStateRestore=StateRestore;\r |
68 | AddExState(&StateRegs, ~0, 0, 0);\r |
69 | }\r |
70 | \r |
71 | void Mapper167_init(void)\r |
72 | {\r |
73 | mode=0;\r |
74 | DRegs[0]=DRegs[1]=DRegs[2]=DRegs[3]=0;\r |
75 | Sync();\r |
76 | SetWriteHandler(0x8000,0xFFFF,Mapper167_write);\r |
77 | GameStateRestore=StateRestore;\r |
78 | AddExState(&StateRegs, ~0, 0, 0);\r |
79 | }\r |